Definition of "imidazole" [imidazole]

• An organic crystalline base, C3H4N2, that is an inhibitor of histamine. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Free imidazole compounds in white and dark muscles of migratory marine fish."
• "The dark blue copper ion is bonded in a cavity between two imidazole groups (the five-membered rings) and two yellow sulphur atoms."
• "The experimental drug, BW - 322, the imidazole derivative of 6-MP, seemed to have the best therapeutic index."